CJ7 converting to 4.3ltr Chev with T18 Tranny [Archive]

jefe

11-23-2001, 11:53 PM

Why don't you look for a GM 4 speed like the SM420 or SM465? They're plentiful and cheap. You will need the Chevy B.H. for the manual trans but it bolts to the 4.3L. You will have to buy an adapter anyway to mate to the D300 to any trans worth installing, so Ford or Chevy trannie, it doesn't matter.
regards, as always, jefe
Here are some of your choices:
The Warner T98A and T18 (13-01) transmissions are externally identical. Positive I.D cannot be made by case casting numbers only.
T98A Top loaded heavy duty transmission with tower shift and iron case and cover. Case castings #T98x-1x, T18x-1x, or #13-01-065-9xx. Easily confused with the later T18 (13-01).Identification points: (1) 17 teeth on the small step of the cluster (2) 43 teeth on the 1st/reverse sliding gear (3) bronze bushing under third gear (4) loose rollers under 2nd gear (5) maindrive pilot bore 1.437" ID with 16 rollers required.
T18 Top loaded H.D. trans with tower shift and iron case and cover. An improved version of the T98A (see above). E.D. points: (1) 16 teeth on the small step of the cluster (2) 40 teeth on the 1st/reverse sliding gear (3) no bushing under 3rd gear (4) no rollers under 2nd gear (5) maindrive pilot bore 1.510" ID with 22 rollers required. Later units use large synchro cones on 3rd and 4th not found on T98/T98A.
T19 Top loaded heavy duty transmission with tower shift and iron case and cover (13-09). Externally similar to the Warner T18 (13-01) but with all forward gears synchronized. Distinguished from the Warner T18 (13-01) by the single step idler (2 step on the T18), the separate 1st and reverse gears (part of the 2nd gear synchro on the T18), and the 39 tooth synchro rings for 1st and 2nd (36 tooth on 2nd only for T18).

T98A (H) 6.40/3.09/1.69/1.00/7.82 Jeep '55-72 Ford '48-55 T98, '56-64 T98A
T18 (H) 6.32/3.09/1.69/1.00/7.44 Jeep '65-85 Ford '65-85 IHC '69-73
T18B (H) 4.32/2.26/1.51/1.00/5.08 Ford '65-85
T18C (H) 4.02/2.41/1.41/1.00/4.73 Jeep '65-85 IHC '69-73
T19 (H) 6.32/3.09/1.68/1.00/6.96 Ford '68-85 IHC '74-85
T19C (H) 5.11/3.03/1.79/1.00/5.63 Ford '68-85 (all T19's, all synchro)
T19A (H) 4.02/2.41/1.41/1.00/5.63 Ford '68-85 IHC '74-85
ball bearing maindrive/ mainshaft
T19D (H) 4.02/2.41/1.41/1.00/5.63 Ford '68-85 IHC '74-85
tapered bearing maindrive/mainshaft
NP420 (H) 6.68/3.10/1.69/1.00/8.25 Chrysler '56-68
NP435 (H) 4.78/2.39/1.37/1.00/ Chrysler
NP435A (H) 4.56/2.28/1.31/1.00/5.64 GM '63-72 Chrysler '63-85
NP435D (H) 4.90/2.29/1.19/1.00/6.06 GM '63-72
NP435E (H) 6.68/3.34/1.74/1.00/8.26 Ford '64-85
NP435L (H) 6.68/3.34/1.66/1.00/8.26 Ford '64-85/GM '64-72/IHC '64-85/Chrysler '63-85
NP4500 (H) 6.69/3.34/1.66/1.00/5.96 IHC '70-78(all synchro)
NP4500 (H) 4.56/2.28/1.31/1.00/5.65 Chrysler '70-79 (all synchro)(also called NP445)
NP4500 (H) 4.56/2.28/1.31/1.00/4.07 GM '67-72

Another option is the possibility of the 1970-79 use by Chrysler of the NP4500 (not to be confused with the later NV4500, an entirely different trannie).
NP4500 Top loaded H.D. transmission with tower shift, iron case and die cast aluminum cover. Similar to the NP435 but with synchros on all forward gears. Full synchronizer for 1st and 2nd. Tapered bearing maindrive and mainshaft and solid countershaft cluster supported by needle bearings.


Pirate4x4.Com > Brand Specific Tech > Jeep - Hardcore Tech > CJ7 converting to 4.3ltr Chev with T18 Tranny PDA : CJ7 converting to 4.3ltr Chev with T18 Tranny Squirrelbait 11-20-2001, 03:16 PM Hey guys lookin for a bit of info ( for a friend ) on swaping this in and wanted to know what year make and model of ford do I have to start searching for in the wrecking yard... He has a 1986 CJ7 with a 4.3 Chev Throttle body Fuelly. Current setup is a dana 300 with a Iron Duke tranny 904 ?? Anyhelp is appreciated. ~ Squirrelbait ~ JohnC 11-20-2001, 05:06 PM I think the bellhousing you want is the one from the manual transmission versions with the Iron Duke 151. This will give you the Chevy engine pattern and most of the Ford pattern (I think you have to drill a couple holes in the bellhousing for the tranny, but it already has bosses cast in the right places for the holes). These came in CJ 5s and 7s in 1980 and early 1981. Look for an Iron Duke 151 likely paired to an SR-4 Ford 4 speed. CSP 11-21-2001, 08:23 AM For the T18 look at '70's to early 80's pickups. Find one out of a two wheel drive if you can. They are easier to convert especially when using a Dana 300. Squirrelbait 11-22-2001, 04:34 PM ! jefe 11-23-2001, 11:53 PM Why don't you look for a GM 4 speed like the SM420 or SM465? They're plentiful and cheap. You will need the Chevy B.H. for the manual trans but it bolts to the 4.3L. You will have to buy an adapter anyway to mate to the D300 to any trans worth installing, so Ford or Chevy trannie, it doesn't matter. regards, as always, jefe Here are some of your choices: The Warner T98A and T18 (13-01) transmissions are externally identical. Positive I.D cannot be made by case casting numbers only. T98A Top loaded heavy duty transmission with tower shift and iron case and cover. Case castings #T98x-1x, T18x-1x, or #13-01-065-9xx. Easily confused with the later T18 (13-01).Identification points: (1) 17 teeth on the small step of the cluster (2) 43 teeth on the 1st/reverse sliding gear (3) bronze bushing under third gear (4) loose rollers under 2nd gear (5) maindrive pilot bore 1.437" ID with 16 rollers required. T18 Top loaded H.D. trans with tower shift and iron case and cover. An improved version of the T98A (see above). E.D. points: (1) 16 teeth on the small step of the cluster (2) 40 teeth on the 1st/reverse sliding gear (3) no bushing under 3rd gear (4) no rollers under 2nd gear (5) maindrive pilot bore 1.510" ID with 22 rollers required. Later units use large synchro cones on 3rd and 4th not found on T98/T98A. T19 Top loaded heavy duty transmission with tower shift and iron case and cover (13-09). Externally similar to the Warner T18 (13-01) but with all forward gears synchronized. Distinguished from the Warner T18 (13-01) by the single step idler (2 step on the T18), the separate 1st and reverse gears (part of the 2nd gear synchro on the T18), and the 39 tooth synchro rings for 1st and 2nd (36 tooth on 2nd only for T18). T98A (H) 6.40/3.09/1.69/1.00/7.82 Jeep '55-72 Ford '48-55 T98, '56-64 T98A T18 (H) 6.32/3.09/1.69/1.00/7.44 Jeep '65-85 Ford '65-85 IHC '69-73 T18B (H) 4.32/2.26/1.51/1.00/5.08 Ford '65-85 T18C (H) 4.02/2.41/1.41/1.00/4.73 Jeep '65-85 IHC '69-73 T19 (H) 6.32/3.09/1.68/1.00/6.96 Ford '68-85 IHC '74-85 T19C (H) 5.11/3.03/1.79/1.00/5.63 Ford '68-85 (all T19's, all synchro) T19A (H) 4.02/2.41/1.41/1.00/5.63 Ford '68-85 IHC '74-85 ball bearing maindrive/ mainshaft T19D (H) 4.02/2.41/1.41/1.00/5.63 Ford '68-85 IHC '74-85 tapered bearing maindrive/mainshaft NP420 (H) 6.68/3.10/1.69/1.00/8.25 Chrysler '56-68 NP435 (H) 4.78/2.39/1.37/1.00/ Chrysler NP435A (H) 4.56/2.28/1.31/1.00/5.64 GM '63-72 Chrysler '63-85 NP435D (H) 4.90/2.29/1.19/1.00/6.06 GM '63-72 NP435E (H) 6.68/3.34/1.74/1.00/8.26 Ford '64-85 NP435L (H) 6.68/3.34/1.66/1.00/8.26 Ford '64-85/GM '64-72/IHC '64-85/Chrysler '63-85 NP4500 (H) 6.69/3.34/1.66/1.00/5.96 IHC '70-78(all synchro) NP4500 (H) 4.56/2.28/1.31/1.00/5.65 Chrysler '70-79 (all synchro)(also called NP445) NP4500 (H) 4.56/2.28/1.31/1.00/4.07 GM '67-72 Another option is the possibility of the 1970-79 use by Chrysler of the NP4500 (not to be confused with the later NV4500, an entirely different trannie). NP4500 Top loaded H.D. transmission with tower shift, iron case and die cast aluminum cover. Similar to the NP435 but with synchros on all forward gears. Full synchronizer for 1st and 2nd. Tapered bearing maindrive and mainshaft and solid countershaft cluster supported by needle bearings.